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Finding the Fourth Proportional to 74,417.30, 111,431.55 and 70,918.10

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Solution

The fourth proportional to 74,417.30, 111,431.55 and 70,918.10 is: 106,191.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,417.30 : 111,431.55 = 70,918.10 : x
  2. Step 2: Convert to fraction form
    74,417.30/111,431.55 = 70,918.10/x
  3. Step 3: Cross multiply
    74,417.30x = 111,431.55 × 70,918.10
  4. Step 4: Simplify right side
    74,417.30x = 7,902,513,806.06
  5. Step 5: Solve for x
    x = 7,902,513,806.06/74,417.30
  6. Step 6: Final answer
    x = 106,191.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.