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Finding the Fourth Proportional to 64,840.70, 97,071.89 and 39,804.89

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Solution

The fourth proportional to 64,840.70, 97,071.89 and 39,804.89 is: 59,591.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,840.70 : 97,071.89 = 39,804.89 : x
  2. Step 2: Convert to fraction form
    64,840.70/97,071.89 = 39,804.89/x
  3. Step 3: Cross multiply
    64,840.70x = 97,071.89 × 39,804.89
  4. Step 4: Simplify right side
    64,840.70x = 3,863,935,219.16
  5. Step 5: Solve for x
    x = 3,863,935,219.16/64,840.70
  6. Step 6: Final answer
    x = 59,591.20

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1.5x scale

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.