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Finding the Fourth Proportional to 72,502.98, 100,053.68 and 42,285.93

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Solution

The fourth proportional to 72,502.98, 100,053.68 and 42,285.93 is: 58,354.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,502.98 : 100,053.68 = 42,285.93 : x
  2. Step 2: Convert to fraction form
    72,502.98/100,053.68 = 42,285.93/x
  3. Step 3: Cross multiply
    72,502.98x = 100,053.68 × 42,285.93
  4. Step 4: Simplify right side
    72,502.98x = 4,230,862,697.29
  5. Step 5: Solve for x
    x = 4,230,862,697.29/72,502.98
  6. Step 6: Final answer
    x = 58,354.33

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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.