Home / 78,073.17-107,753.73-47,875.11

Finding the Fourth Proportional to 78,073.17, 107,753.73 and 47,875.11

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Solution

The fourth proportional to 78,073.17, 107,753.73 and 47,875.11 is: 66,075.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,073.17 : 107,753.73 = 47,875.11 : x
  2. Step 2: Convert to fraction form
    78,073.17/107,753.73 = 47,875.11/x
  3. Step 3: Cross multiply
    78,073.17x = 107,753.73 × 47,875.11
  4. Step 4: Simplify right side
    78,073.17x = 5,158,721,676.66
  5. Step 5: Solve for x
    x = 5,158,721,676.66/78,073.17
  6. Step 6: Final answer
    x = 66,075.47

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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.