Home / 74,128.71-102,295.40-42,296.79

Finding the Fourth Proportional to 74,128.71, 102,295.40 and 42,296.79

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Solution

The fourth proportional to 74,128.71, 102,295.40 and 42,296.79 is: 58,368.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,128.71 : 102,295.40 = 42,296.79 : x
  2. Step 2: Convert to fraction form
    74,128.71/102,295.40 = 42,296.79/x
  3. Step 3: Cross multiply
    74,128.71x = 102,295.40 × 42,296.79
  4. Step 4: Simplify right side
    74,128.71x = 4,326,766,840.28
  5. Step 5: Solve for x
    x = 4,326,766,840.28/74,128.71
  6. Step 6: Final answer
    x = 58,368.30

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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.