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Finding the Fourth Proportional to 98,510.40, 135,943.36 and 53,798.40

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Solution

The fourth proportional to 98,510.40, 135,943.36 and 53,798.40 is: 74,241.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,510.40 : 135,943.36 = 53,798.40 : x
  2. Step 2: Convert to fraction form
    98,510.40/135,943.36 = 53,798.40/x
  3. Step 3: Cross multiply
    98,510.40x = 135,943.36 × 53,798.40
  4. Step 4: Simplify right side
    98,510.40x = 7,313,535,258.62
  5. Step 5: Solve for x
    x = 7,313,535,258.62/98,510.40
  6. Step 6: Final answer
    x = 74,241.25

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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.