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Finding the Fourth Proportional to 70,987.94, 97,963.43 and 40,779.10

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Solution

The fourth proportional to 70,987.94, 97,963.43 and 40,779.10 is: 56,275.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,987.94 : 97,963.43 = 40,779.10 : x
  2. Step 2: Convert to fraction form
    70,987.94/97,963.43 = 40,779.10/x
  3. Step 3: Cross multiply
    70,987.94x = 97,963.43 × 40,779.10
  4. Step 4: Simplify right side
    70,987.94x = 3,994,860,508.31
  5. Step 5: Solve for x
    x = 3,994,860,508.31/70,987.94
  6. Step 6: Final answer
    x = 56,275.20

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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.