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Finding the Fourth Proportional to 30,602,602.90, 42,900,331.10 and 30,602,602.90

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Solution

The fourth proportional to 30,602,602.90, 42,900,331.10 and 30,602,602.90 is: 42,900,331.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,602,602.90 : 42,900,331.10 = 30,602,602.90 : x
  2. Step 2: Convert to fraction form
    30,602,602.90/42,900,331.10 = 30,602,602.90/x
  3. Step 3: Cross multiply
    30,602,602.90x = 42,900,331.10 × 30,602,602.90
  4. Step 4: Simplify right side
    30,602,602.90x = 1,312,861,796,931,820.25
  5. Step 5: Solve for x
    x = 1,312,861,796,931,820.25/30,602,602.90
  6. Step 6: Final answer
    x = 42,900,331.10

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.