Home / 76,470.36-105,545.96-42,490.52

Finding the Fourth Proportional to 76,470.36, 105,545.96 and 42,490.52

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Solution

The fourth proportional to 76,470.36, 105,545.96 and 42,490.52 is: 58,646.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,470.36 : 105,545.96 = 42,490.52 : x
  2. Step 2: Convert to fraction form
    76,470.36/105,545.96 = 42,490.52/x
  3. Step 3: Cross multiply
    76,470.36x = 105,545.96 × 42,490.52
  4. Step 4: Simplify right side
    76,470.36x = 4,484,702,539.25
  5. Step 5: Solve for x
    x = 4,484,702,539.25/76,470.36
  6. Step 6: Final answer
    x = 58,646.29

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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.