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Finding the Fourth Proportional to 91,606.92, 126,428.74 and 55,802.20

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Solution

The fourth proportional to 91,606.92, 126,428.74 and 55,802.20 is: 77,013.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,606.92 : 126,428.74 = 55,802.20 : x
  2. Step 2: Convert to fraction form
    91,606.92/126,428.74 = 55,802.20/x
  3. Step 3: Cross multiply
    91,606.92x = 126,428.74 × 55,802.20
  4. Step 4: Simplify right side
    91,606.92x = 7,055,001,835.23
  5. Step 5: Solve for x
    x = 7,055,001,835.23/91,606.92
  6. Step 6: Final answer
    x = 77,013.85

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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.