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Finding the Fourth Proportional to 64,913.70, 91,010.40 and 64,913.70

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Solution

The fourth proportional to 64,913.70, 91,010.40 and 64,913.70 is: 91,010.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,913.70 : 91,010.40 = 64,913.70 : x
  2. Step 2: Convert to fraction form
    64,913.70/91,010.40 = 64,913.70/x
  3. Step 3: Cross multiply
    64,913.70x = 91,010.40 × 64,913.70
  4. Step 4: Simplify right side
    64,913.70x = 5,907,821,802.48
  5. Step 5: Solve for x
    x = 5,907,821,802.48/64,913.70
  6. Step 6: Final answer
    x = 91,010.40

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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.