Home / 86,939,824.80-130,409,737.20-61,430,656.80

Finding the Fourth Proportional to 86,939,824.80, 130,409,737.20 and 61,430,656.80

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Solution

The fourth proportional to 86,939,824.80, 130,409,737.20 and 61,430,656.80 is: 92,145,985.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,939,824.80 : 130,409,737.20 = 61,430,656.80 : x
  2. Step 2: Convert to fraction form
    86,939,824.80/130,409,737.20 = 61,430,656.80/x
  3. Step 3: Cross multiply
    86,939,824.80x = 130,409,737.20 × 61,430,656.80
  4. Step 4: Simplify right side
    86,939,824.80x = 8,011,155,809,311,393
  5. Step 5: Solve for x
    x = 8,011,155,809,311,393/86,939,824.80
  6. Step 6: Final answer
    x = 92,145,985.20

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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.