Home / 56,130.18-77,454.14-30,978.06

Finding the Fourth Proportional to 56,130.18, 77,454.14 and 30,978.06

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Solution

The fourth proportional to 56,130.18, 77,454.14 and 30,978.06 is: 42,746.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,130.18 : 77,454.14 = 30,978.06 : x
  2. Step 2: Convert to fraction form
    56,130.18/77,454.14 = 30,978.06/x
  3. Step 3: Cross multiply
    56,130.18x = 77,454.14 × 30,978.06
  4. Step 4: Simplify right side
    56,130.18x = 2,399,378,841.28
  5. Step 5: Solve for x
    x = 2,399,378,841.28/56,130.18
  6. Step 6: Final answer
    x = 42,746.68

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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.