Home / 85,824,331.40-128,736,497.10-31,960,497.80

Finding the Fourth Proportional to 85,824,331.40, 128,736,497.10 and 31,960,497.80

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Solution

The fourth proportional to 85,824,331.40, 128,736,497.10 and 31,960,497.80 is: 47,940,746.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,824,331.40 : 128,736,497.10 = 31,960,497.80 : x
  2. Step 2: Convert to fraction form
    85,824,331.40/128,736,497.10 = 31,960,497.80/x
  3. Step 3: Cross multiply
    85,824,331.40x = 128,736,497.10 × 31,960,497.80
  4. Step 4: Simplify right side
    85,824,331.40x = 4,114,482,532,344,256.50
  5. Step 5: Solve for x
    x = 4,114,482,532,344,256.50/85,824,331.40
  6. Step 6: Final answer
    x = 47,940,746.70

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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.