Home / 91,655.10-126,312.81-71,480.10

Finding the Fourth Proportional to 91,655.10, 126,312.81 and 71,480.10

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Solution

The fourth proportional to 91,655.10, 126,312.81 and 71,480.10 is: 98,509.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,655.10 : 126,312.81 = 71,480.10 : x
  2. Step 2: Convert to fraction form
    91,655.10/126,312.81 = 71,480.10/x
  3. Step 3: Cross multiply
    91,655.10x = 126,312.81 × 71,480.10
  4. Step 4: Simplify right side
    91,655.10x = 9,028,852,290.08
  5. Step 5: Solve for x
    x = 9,028,852,290.08/91,655.10
  6. Step 6: Final answer
    x = 98,509.00

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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.