Home / 81,032,405.40-121,548,608.10-71,466,467.40

Finding the Fourth Proportional to 81,032,405.40, 121,548,608.10 and 71,466,467.40

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Solution

The fourth proportional to 81,032,405.40, 121,548,608.10 and 71,466,467.40 is: 107,199,701.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,032,405.40 : 121,548,608.10 = 71,466,467.40 : x
  2. Step 2: Convert to fraction form
    81,032,405.40/121,548,608.10 = 71,466,467.40/x
  3. Step 3: Cross multiply
    81,032,405.40x = 121,548,608.10 × 71,466,467.40
  4. Step 4: Simplify right side
    81,032,405.40x = 8,686,649,638,294,026
  5. Step 5: Solve for x
    x = 8,686,649,638,294,026/81,032,405.40
  6. Step 6: Final answer
    x = 107,199,701.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.