Home / 91,428.18-126,248.76-57,493.46

Finding the Fourth Proportional to 91,428.18, 126,248.76 and 57,493.46

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Solution

The fourth proportional to 91,428.18, 126,248.76 and 57,493.46 is: 79,389.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,428.18 : 126,248.76 = 57,493.46 : x
  2. Step 2: Convert to fraction form
    91,428.18/126,248.76 = 57,493.46/x
  3. Step 3: Cross multiply
    91,428.18x = 126,248.76 × 57,493.46
  4. Step 4: Simplify right side
    91,428.18x = 7,258,477,401.87
  5. Step 5: Solve for x
    x = 7,258,477,401.87/91,428.18
  6. Step 6: Final answer
    x = 79,389.94

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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.