Home / 74,754.24-103,128.48-42,915.84

Finding the Fourth Proportional to 74,754.24, 103,128.48 and 42,915.84

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Solution

The fourth proportional to 74,754.24, 103,128.48 and 42,915.84 is: 59,205.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,754.24 : 103,128.48 = 42,915.84 : x
  2. Step 2: Convert to fraction form
    74,754.24/103,128.48 = 42,915.84/x
  3. Step 3: Cross multiply
    74,754.24x = 103,128.48 × 42,915.84
  4. Step 4: Simplify right side
    74,754.24x = 4,425,845,347.12
  5. Step 5: Solve for x
    x = 4,425,845,347.12/74,754.24
  6. Step 6: Final answer
    x = 59,205.28

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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.