Home / 56,509-77,984.85-31,358.50

Finding the Fourth Proportional to 56,509, 77,984.85 and 31,358.50

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Solution

The fourth proportional to 56,509, 77,984.85 and 31,358.50 is: 43,276.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,509 : 77,984.85 = 31,358.50 : x
  2. Step 2: Convert to fraction form
    56,509/77,984.85 = 31,358.50/x
  3. Step 3: Cross multiply
    56,509x = 77,984.85 × 31,358.50
  4. Step 4: Simplify right side
    56,509x = 2,445,487,918.73
  5. Step 5: Solve for x
    x = 2,445,487,918.73/56,509
  6. Step 6: Final answer
    x = 43,276.08

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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.