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Finding the Fourth Proportional to 89,527.76, 134,824.60 and 77,980.40

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Solution

The fourth proportional to 89,527.76, 134,824.60 and 77,980.40 is: 117,434.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,527.76 : 134,824.60 = 77,980.40 : x
  2. Step 2: Convert to fraction form
    89,527.76/134,824.60 = 77,980.40/x
  3. Step 3: Cross multiply
    89,527.76x = 134,824.60 × 77,980.40
  4. Step 4: Simplify right side
    89,527.76x = 10,513,676,237.84
  5. Step 5: Solve for x
    x = 10,513,676,237.84/89,527.76
  6. Step 6: Final answer
    x = 117,434.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.