Home / 91,970.68-126,919.02-56,155.72

Finding the Fourth Proportional to 91,970.68, 126,919.02 and 56,155.72

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Solution

The fourth proportional to 91,970.68, 126,919.02 and 56,155.72 is: 77,494.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,970.68 : 126,919.02 = 56,155.72 : x
  2. Step 2: Convert to fraction form
    91,970.68/126,919.02 = 56,155.72/x
  3. Step 3: Cross multiply
    91,970.68x = 126,919.02 × 56,155.72
  4. Step 4: Simplify right side
    91,970.68x = 7,127,228,949.79
  5. Step 5: Solve for x
    x = 7,127,228,949.79/91,970.68
  6. Step 6: Final answer
    x = 77,494.58

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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.