Home / 56,281.13-77,670.38-31,130.63

Finding the Fourth Proportional to 56,281.13, 77,670.38 and 31,130.63

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Solution

The fourth proportional to 56,281.13, 77,670.38 and 31,130.63 is: 42,961.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,281.13 : 77,670.38 = 31,130.63 : x
  2. Step 2: Convert to fraction form
    56,281.13/77,670.38 = 31,130.63/x
  3. Step 3: Cross multiply
    56,281.13x = 77,670.38 × 31,130.63
  4. Step 4: Simplify right side
    56,281.13x = 2,417,927,551.21
  5. Step 5: Solve for x
    x = 2,417,927,551.21/56,281.13
  6. Step 6: Final answer
    x = 42,961.61

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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.