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Finding the Fourth Proportional to 86,479.80, 119,328.40 and 48,746.76

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Solution

The fourth proportional to 86,479.80, 119,328.40 and 48,746.76 is: 67,262.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,479.80 : 119,328.40 = 48,746.76 : x
  2. Step 2: Convert to fraction form
    86,479.80/119,328.40 = 48,746.76/x
  3. Step 3: Cross multiply
    86,479.80x = 119,328.40 × 48,746.76
  4. Step 4: Simplify right side
    86,479.80x = 5,816,872,875.98
  5. Step 5: Solve for x
    x = 5,816,872,875.98/86,479.80
  6. Step 6: Final answer
    x = 67,262.79

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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.