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Finding the Fourth Proportional to 84,765,390, 127,167,039 and 30,912,702

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Solution

The fourth proportional to 84,765,390, 127,167,039 and 30,912,702 is: 46,375,965.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,765,390 : 127,167,039 = 30,912,702 : x
  2. Step 2: Convert to fraction form
    84,765,390/127,167,039 = 30,912,702/x
  3. Step 3: Cross multiply
    84,765,390x = 127,167,039 × 30,912,702
  4. Step 4: Simplify right side
    84,765,390x = 3,931,076,780,829,378
  5. Step 5: Solve for x
    x = 3,931,076,780,829,378/84,765,390
  6. Step 6: Final answer
    x = 46,375,965.25

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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.