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Finding the Fourth Proportional to 28,238,702.65, 42,358,053.98 and 28,238,702.65

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Solution

The fourth proportional to 28,238,702.65, 42,358,053.98 and 28,238,702.65 is: 42,358,053.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,238,702.65 : 42,358,053.98 = 28,238,702.65 : x
  2. Step 2: Convert to fraction form
    28,238,702.65/42,358,053.98 = 28,238,702.65/x
  3. Step 3: Cross multiply
    28,238,702.65x = 42,358,053.98 × 28,238,702.65
  4. Step 4: Simplify right side
    28,238,702.65x = 1,196,136,491,173,869
  5. Step 5: Solve for x
    x = 1,196,136,491,173,869/28,238,702.65
  6. Step 6: Final answer
    x = 42,358,053.98

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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.