Home / 86,423.70-119,319.76-70,545.90

Finding the Fourth Proportional to 86,423.70, 119,319.76 and 70,545.90

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Solution

The fourth proportional to 86,423.70, 119,319.76 and 70,545.90 is: 97,398.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,423.70 : 119,319.76 = 70,545.90 : x
  2. Step 2: Convert to fraction form
    86,423.70/119,319.76 = 70,545.90/x
  3. Step 3: Cross multiply
    86,423.70x = 119,319.76 × 70,545.90
  4. Step 4: Simplify right side
    86,423.70x = 8,417,519,856.98
  5. Step 5: Solve for x
    x = 8,417,519,856.98/86,423.70
  6. Step 6: Final answer
    x = 97,398.28

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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.