Home / 85,800,666.20-128,700,999.30-51,363,289.40

Finding the Fourth Proportional to 85,800,666.20, 128,700,999.30 and 51,363,289.40

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Solution

The fourth proportional to 85,800,666.20, 128,700,999.30 and 51,363,289.40 is: 77,044,934.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,800,666.20 : 128,700,999.30 = 51,363,289.40 : x
  2. Step 2: Convert to fraction form
    85,800,666.20/128,700,999.30 = 51,363,289.40/x
  3. Step 3: Cross multiply
    85,800,666.20x = 128,700,999.30 × 51,363,289.40
  4. Step 4: Simplify right side
    85,800,666.20x = 6,610,506,673,115,097
  5. Step 5: Solve for x
    x = 6,610,506,673,115,097/85,800,666.20
  6. Step 6: Final answer
    x = 77,044,934.10

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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.