Home / 72,430.13-108,666.16-30,288.47

Finding the Fourth Proportional to 72,430.13, 108,666.16 and 30,288.47

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Solution

The fourth proportional to 72,430.13, 108,666.16 and 30,288.47 is: 45,441.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,430.13 : 108,666.16 = 30,288.47 : x
  2. Step 2: Convert to fraction form
    72,430.13/108,666.16 = 30,288.47/x
  3. Step 3: Cross multiply
    72,430.13x = 108,666.16 × 30,288.47
  4. Step 4: Simplify right side
    72,430.13x = 3,291,331,108.12
  5. Step 5: Solve for x
    x = 3,291,331,108.12/72,430.13
  6. Step 6: Final answer
    x = 45,441.46

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.