Home / 65,820,603.28-90,788,696.12-42,328,840.72

Finding the Fourth Proportional to 65,820,603.28, 90,788,696.12 and 42,328,840.72

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Solution

The fourth proportional to 65,820,603.28, 90,788,696.12 and 42,328,840.72 is: 58,385,673.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,820,603.28 : 90,788,696.12 = 42,328,840.72 : x
  2. Step 2: Convert to fraction form
    65,820,603.28/90,788,696.12 = 42,328,840.72/x
  3. Step 3: Cross multiply
    65,820,603.28x = 90,788,696.12 × 42,328,840.72
  4. Step 4: Simplify right side
    65,820,603.28x = 3,842,980,257,239,962
  5. Step 5: Solve for x
    x = 3,842,980,257,239,962/65,820,603.28
  6. Step 6: Final answer
    x = 58,385,673.57

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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.