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Finding the Fourth Proportional to 74,503.79, 102,802.53 and 42,237.03

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Solution

The fourth proportional to 74,503.79, 102,802.53 and 42,237.03 is: 58,279.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,503.79 : 102,802.53 = 42,237.03 : x
  2. Step 2: Convert to fraction form
    74,503.79/102,802.53 = 42,237.03/x
  3. Step 3: Cross multiply
    74,503.79x = 102,802.53 × 42,237.03
  4. Step 4: Simplify right side
    74,503.79x = 4,342,073,543.69
  5. Step 5: Solve for x
    x = 4,342,073,543.69/74,503.79
  6. Step 6: Final answer
    x = 58,279.90

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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.