Home / 91,399.69-126,130.50-51,113.08

Finding the Fourth Proportional to 91,399.69, 126,130.50 and 51,113.08

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Solution

The fourth proportional to 91,399.69, 126,130.50 and 51,113.08 is: 70,535.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,399.69 : 126,130.50 = 51,113.08 : x
  2. Step 2: Convert to fraction form
    91,399.69/126,130.50 = 51,113.08/x
  3. Step 3: Cross multiply
    91,399.69x = 126,130.50 × 51,113.08
  4. Step 4: Simplify right side
    91,399.69x = 6,446,918,021.61
  5. Step 5: Solve for x
    x = 6,446,918,021.61/91,399.69
  6. Step 6: Final answer
    x = 70,535.45

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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.