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Finding the Fourth Proportional to 61,851.04, 85,312.08 and 42,974.56

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Solution

The fourth proportional to 61,851.04, 85,312.08 and 42,974.56 is: 59,275.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,851.04 : 85,312.08 = 42,974.56 : x
  2. Step 2: Convert to fraction form
    61,851.04/85,312.08 = 42,974.56/x
  3. Step 3: Cross multiply
    61,851.04x = 85,312.08 × 42,974.56
  4. Step 4: Simplify right side
    61,851.04x = 3,666,249,100.68
  5. Step 5: Solve for x
    x = 3,666,249,100.68/61,851.04
  6. Step 6: Final answer
    x = 59,275.46

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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.