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Finding the Fourth Proportional to 75,242.72, 103,598.52 and 63,888.32

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Solution

The fourth proportional to 75,242.72, 103,598.52 and 63,888.32 is: 87,965.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,242.72 : 103,598.52 = 63,888.32 : x
  2. Step 2: Convert to fraction form
    75,242.72/103,598.52 = 63,888.32/x
  3. Step 3: Cross multiply
    75,242.72x = 103,598.52 × 63,888.32
  4. Step 4: Simplify right side
    75,242.72x = 6,618,735,397.29
  5. Step 5: Solve for x
    x = 6,618,735,397.29/75,242.72
  6. Step 6: Final answer
    x = 87,965.13

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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.