Home / 81,030.10-121,545.15-34,276.90

Finding the Fourth Proportional to 81,030.10, 121,545.15 and 34,276.90

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Solution

The fourth proportional to 81,030.10, 121,545.15 and 34,276.90 is: 51,415.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,030.10 : 121,545.15 = 34,276.90 : x
  2. Step 2: Convert to fraction form
    81,030.10/121,545.15 = 34,276.90/x
  3. Step 3: Cross multiply
    81,030.10x = 121,545.15 × 34,276.90
  4. Step 4: Simplify right side
    81,030.10x = 4,166,190,952.04
  5. Step 5: Solve for x
    x = 4,166,190,952.04/81,030.10
  6. Step 6: Final answer
    x = 51,415.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.