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Finding the Fourth Proportional to 86,412.64, 119,282.88 and 67,555.84

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Solution

The fourth proportional to 86,412.64, 119,282.88 and 67,555.84 is: 93,253.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,412.64 : 119,282.88 = 67,555.84 : x
  2. Step 2: Convert to fraction form
    86,412.64/119,282.88 = 67,555.84/x
  3. Step 3: Cross multiply
    86,412.64x = 119,282.88 × 67,555.84
  4. Step 4: Simplify right side
    86,412.64x = 8,058,255,156.02
  5. Step 5: Solve for x
    x = 8,058,255,156.02/86,412.64
  6. Step 6: Final answer
    x = 93,253.20

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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.