Home / 74,886,640.40-112,329,960.60-42,638,013.20

Finding the Fourth Proportional to 74,886,640.40, 112,329,960.60 and 42,638,013.20

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Solution

The fourth proportional to 74,886,640.40, 112,329,960.60 and 42,638,013.20 is: 63,957,019.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,886,640.40 : 112,329,960.60 = 42,638,013.20 : x
  2. Step 2: Convert to fraction form
    74,886,640.40/112,329,960.60 = 42,638,013.20/x
  3. Step 3: Cross multiply
    74,886,640.40x = 112,329,960.60 × 42,638,013.20
  4. Step 4: Simplify right side
    74,886,640.40x = 4,789,526,342,818,280
  5. Step 5: Solve for x
    x = 4,789,526,342,818,280/74,886,640.40
  6. Step 6: Final answer
    x = 63,957,019.80

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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.