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Finding the Fourth Proportional to 45,856.90, 64,243.40 and 45,856.90

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Solution

The fourth proportional to 45,856.90, 64,243.40 and 45,856.90 is: 64,243.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,856.90 : 64,243.40 = 45,856.90 : x
  2. Step 2: Convert to fraction form
    45,856.90/64,243.40 = 45,856.90/x
  3. Step 3: Cross multiply
    45,856.90x = 64,243.40 × 45,856.90
  4. Step 4: Simplify right side
    45,856.90x = 2,946,003,169.46
  5. Step 5: Solve for x
    x = 2,946,003,169.46/45,856.90
  6. Step 6: Final answer
    x = 64,243.40

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1.5x scale

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.