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Finding the Fourth Proportional to 74,259.01, 102,471.10 and 42,421.69

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Solution

The fourth proportional to 74,259.01, 102,471.10 and 42,421.69 is: 58,538.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,259.01 : 102,471.10 = 42,421.69 : x
  2. Step 2: Convert to fraction form
    74,259.01/102,471.10 = 42,421.69/x
  3. Step 3: Cross multiply
    74,259.01x = 102,471.10 × 42,421.69
  4. Step 4: Simplify right side
    74,259.01x = 4,346,997,238.16
  5. Step 5: Solve for x
    x = 4,346,997,238.16/74,259.01
  6. Step 6: Final answer
    x = 58,538.31

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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.