Home / 86,939,018.70-130,408,528.05-65,256,225.90

Finding the Fourth Proportional to 86,939,018.70, 130,408,528.05 and 65,256,225.90

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Solution

The fourth proportional to 86,939,018.70, 130,408,528.05 and 65,256,225.90 is: 97,884,338.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,939,018.70 : 130,408,528.05 = 65,256,225.90 : x
  2. Step 2: Convert to fraction form
    86,939,018.70/130,408,528.05 = 65,256,225.90/x
  3. Step 3: Cross multiply
    86,939,018.70x = 130,408,528.05 × 65,256,225.90
  4. Step 4: Simplify right side
    86,939,018.70x = 8,509,968,365,717,286
  5. Step 5: Solve for x
    x = 8,509,968,365,717,286/86,939,018.70
  6. Step 6: Final answer
    x = 97,884,338.85

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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.