Home / 76,472.40-105,545.44-57,188.07

Finding the Fourth Proportional to 76,472.40, 105,545.44 and 57,188.07

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Solution

The fourth proportional to 76,472.40, 105,545.44 and 57,188.07 is: 78,929.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,472.40 : 105,545.44 = 57,188.07 : x
  2. Step 2: Convert to fraction form
    76,472.40/105,545.44 = 57,188.07/x
  3. Step 3: Cross multiply
    76,472.40x = 105,545.44 × 57,188.07
  4. Step 4: Simplify right side
    76,472.40x = 6,035,939,724.96
  5. Step 5: Solve for x
    x = 6,035,939,724.96/76,472.40
  6. Step 6: Final answer
    x = 78,929.65

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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.