Home / 90,871,943.40-136,307,915.10-54,592,237.80

Finding the Fourth Proportional to 90,871,943.40, 136,307,915.10 and 54,592,237.80

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Solution

The fourth proportional to 90,871,943.40, 136,307,915.10 and 54,592,237.80 is: 81,888,356.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,871,943.40 : 136,307,915.10 = 54,592,237.80 : x
  2. Step 2: Convert to fraction form
    90,871,943.40/136,307,915.10 = 54,592,237.80/x
  3. Step 3: Cross multiply
    90,871,943.40x = 136,307,915.10 × 54,592,237.80
  4. Step 4: Simplify right side
    90,871,943.40x = 7,441,354,115,161,410
  5. Step 5: Solve for x
    x = 7,441,354,115,161,410/90,871,943.40
  6. Step 6: Final answer
    x = 81,888,356.70

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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.