Home / 85,599,728.20-128,409,334.98-31,038,011.56

Finding the Fourth Proportional to 85,599,728.20, 128,409,334.98 and 31,038,011.56

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Solution

The fourth proportional to 85,599,728.20, 128,409,334.98 and 31,038,011.56 is: 46,560,549.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,599,728.20 : 128,409,334.98 = 31,038,011.56 : x
  2. Step 2: Convert to fraction form
    85,599,728.20/128,409,334.98 = 31,038,011.56/x
  3. Step 3: Cross multiply
    85,599,728.20x = 128,409,334.98 × 31,038,011.56
  4. Step 4: Simplify right side
    85,599,728.20x = 3,985,570,423,521,152.50
  5. Step 5: Solve for x
    x = 3,985,570,423,521,152.50/85,599,728.20
  6. Step 6: Final answer
    x = 46,560,549.98

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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.