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Finding the Fourth Proportional to 56,150, 77,487.04 and 30,999.68

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Solution

The fourth proportional to 56,150, 77,487.04 and 30,999.68 is: 42,779.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,150 : 77,487.04 = 30,999.68 : x
  2. Step 2: Convert to fraction form
    56,150/77,487.04 = 30,999.68/x
  3. Step 3: Cross multiply
    56,150x = 77,487.04 × 30,999.68
  4. Step 4: Simplify right side
    56,150x = 2,402,073,444.15
  5. Step 5: Solve for x
    x = 2,402,073,444.15/56,150
  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.