Home / 74,901.06-112,419.63-39,870.18

Finding the Fourth Proportional to 74,901.06, 112,419.63 and 39,870.18

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Solution

The fourth proportional to 74,901.06, 112,419.63 and 39,870.18 is: 59,841.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,901.06 : 112,419.63 = 39,870.18 : x
  2. Step 2: Convert to fraction form
    74,901.06/112,419.63 = 39,870.18/x
  3. Step 3: Cross multiply
    74,901.06x = 112,419.63 × 39,870.18
  4. Step 4: Simplify right side
    74,901.06x = 4,482,190,883.63
  5. Step 5: Solve for x
    x = 4,482,190,883.63/74,901.06
  6. Step 6: Final answer
    x = 59,841.49

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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.