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Finding the Fourth Proportional to 64,988.76, 89,684.76 and 35,180.76

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Solution

The fourth proportional to 64,988.76, 89,684.76 and 35,180.76 is: 48,549.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,988.76 : 89,684.76 = 35,180.76 : x
  2. Step 2: Convert to fraction form
    64,988.76/89,684.76 = 35,180.76/x
  3. Step 3: Cross multiply
    64,988.76x = 89,684.76 × 35,180.76
  4. Step 4: Simplify right side
    64,988.76x = 3,155,178,017.22
  5. Step 5: Solve for x
    x = 3,155,178,017.22/64,988.76
  6. Step 6: Final answer
    x = 48,549.60

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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.