Home / 86,960,928.70-130,441,393.05-82,709,400.70

Finding the Fourth Proportional to 86,960,928.70, 130,441,393.05 and 82,709,400.70

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Solution

The fourth proportional to 86,960,928.70, 130,441,393.05 and 82,709,400.70 is: 124,064,101.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,960,928.70 : 130,441,393.05 = 82,709,400.70 : x
  2. Step 2: Convert to fraction form
    86,960,928.70/130,441,393.05 = 82,709,400.70/x
  3. Step 3: Cross multiply
    86,960,928.70x = 130,441,393.05 × 82,709,400.70
  4. Step 4: Simplify right side
    86,960,928.70x = 10,788,729,445,638,646
  5. Step 5: Solve for x
    x = 10,788,729,445,638,646/86,960,928.70
  6. Step 6: Final answer
    x = 124,064,101.05

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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.