Home / 31,712,678.50-47,569,017.75-7,778,150.50

Finding the Fourth Proportional to 31,712,678.50, 47,569,017.75 and 7,778,150.50

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Solution

The fourth proportional to 31,712,678.50, 47,569,017.75 and 7,778,150.50 is: 11,667,225.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,712,678.50 : 47,569,017.75 = 7,778,150.50 : x
  2. Step 2: Convert to fraction form
    31,712,678.50/47,569,017.75 = 7,778,150.50/x
  3. Step 3: Cross multiply
    31,712,678.50x = 47,569,017.75 × 7,778,150.50
  4. Step 4: Simplify right side
    31,712,678.50x = 369,998,979,196,671.38
  5. Step 5: Solve for x
    x = 369,998,979,196,671.38/31,712,678.50
  6. Step 6: Final answer
    x = 11,667,225.75

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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.