Home / 56,150.46-77,487.42-30,999.78

Finding the Fourth Proportional to 56,150.46, 77,487.42 and 30,999.78

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Solution

The fourth proportional to 56,150.46, 77,487.42 and 30,999.78 is: 42,779.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,150.46 : 77,487.42 = 30,999.78 : x
  2. Step 2: Convert to fraction form
    56,150.46/77,487.42 = 30,999.78/x
  3. Step 3: Cross multiply
    56,150.46x = 77,487.42 × 30,999.78
  4. Step 4: Simplify right side
    56,150.46x = 2,402,092,972.77
  5. Step 5: Solve for x
    x = 2,402,092,972.77/56,150.46
  6. Step 6: Final answer
    x = 42,779.58

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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.