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Finding the Fourth Proportional to 70,998.40, 98,009.28 and 45,860.16

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Solution

The fourth proportional to 70,998.40, 98,009.28 and 45,860.16 is: 63,307.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,998.40 : 98,009.28 = 45,860.16 : x
  2. Step 2: Convert to fraction form
    70,998.40/98,009.28 = 45,860.16/x
  3. Step 3: Cross multiply
    70,998.40x = 98,009.28 × 45,860.16
  4. Step 4: Simplify right side
    70,998.40x = 4,494,721,262.28
  5. Step 5: Solve for x
    x = 4,494,721,262.28/70,998.40
  6. Step 6: Final answer
    x = 63,307.36

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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.