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Finding the Fourth Proportional to 86,909.94, 130,328.19 and 36,988.02

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Solution

The fourth proportional to 86,909.94, 130,328.19 and 36,988.02 is: 55,466.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,909.94 : 130,328.19 = 36,988.02 : x
  2. Step 2: Convert to fraction form
    86,909.94/130,328.19 = 36,988.02/x
  3. Step 3: Cross multiply
    86,909.94x = 130,328.19 × 36,988.02
  4. Step 4: Simplify right side
    86,909.94x = 4,820,581,698.28
  5. Step 5: Solve for x
    x = 4,820,581,698.28/86,909.94
  6. Step 6: Final answer
    x = 55,466.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.