Home / 85,537,423.70-128,054,193.15-80,554,562.90

Finding the Fourth Proportional to 85,537,423.70, 128,054,193.15 and 80,554,562.90

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Solution

The fourth proportional to 85,537,423.70, 128,054,193.15 and 80,554,562.90 is: 120,594,578.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,537,423.70 : 128,054,193.15 = 80,554,562.90 : x
  2. Step 2: Convert to fraction form
    85,537,423.70/128,054,193.15 = 80,554,562.90/x
  3. Step 3: Cross multiply
    85,537,423.70x = 128,054,193.15 × 80,554,562.90
  4. Step 4: Simplify right side
    85,537,423.70x = 10,315,349,556,710,426
  5. Step 5: Solve for x
    x = 10,315,349,556,710,426/85,537,423.70
  6. Step 6: Final answer
    x = 120,594,578.50

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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.