Home / 66,281.10-91,467.20-39,423.02

Finding the Fourth Proportional to 66,281.10, 91,467.20 and 39,423.02

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Solution

The fourth proportional to 66,281.10, 91,467.20 and 39,423.02 is: 54,403.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,281.10 : 91,467.20 = 39,423.02 : x
  2. Step 2: Convert to fraction form
    66,281.10/91,467.20 = 39,423.02/x
  3. Step 3: Cross multiply
    66,281.10x = 91,467.20 × 39,423.02
  4. Step 4: Simplify right side
    66,281.10x = 3,605,913,254.94
  5. Step 5: Solve for x
    x = 3,605,913,254.94/66,281.10
  6. Step 6: Final answer
    x = 54,403.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.