Home / 90,919.04-125,631-70,827.80

Finding the Fourth Proportional to 90,919.04, 125,631 and 70,827.80

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Solution

The fourth proportional to 90,919.04, 125,631 and 70,827.80 is: 97,869.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,919.04 : 125,631 = 70,827.80 : x
  2. Step 2: Convert to fraction form
    90,919.04/125,631 = 70,827.80/x
  3. Step 3: Cross multiply
    90,919.04x = 125,631 × 70,827.80
  4. Step 4: Simplify right side
    90,919.04x = 8,898,167,341.80
  5. Step 5: Solve for x
    x = 8,898,167,341.80/90,919.04
  6. Step 6: Final answer
    x = 97,869.13

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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.