Home / 56,221.12-77,585.12-31,070.40

Finding the Fourth Proportional to 56,221.12, 77,585.12 and 31,070.40

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Solution

The fourth proportional to 56,221.12, 77,585.12 and 31,070.40 is: 42,877.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,221.12 : 77,585.12 = 31,070.40 : x
  2. Step 2: Convert to fraction form
    56,221.12/77,585.12 = 31,070.40/x
  3. Step 3: Cross multiply
    56,221.12x = 77,585.12 × 31,070.40
  4. Step 4: Simplify right side
    56,221.12x = 2,410,600,712.45
  5. Step 5: Solve for x
    x = 2,410,600,712.45/56,221.12
  6. Step 6: Final answer
    x = 42,877.14

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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.