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Finding the Fourth Proportional to 70,899.59, 97,840.40 and 40,684.25

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Solution

The fourth proportional to 70,899.59, 97,840.40 and 40,684.25 is: 56,143.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,899.59 : 97,840.40 = 40,684.25 : x
  2. Step 2: Convert to fraction form
    70,899.59/97,840.40 = 40,684.25/x
  3. Step 3: Cross multiply
    70,899.59x = 97,840.40 × 40,684.25
  4. Step 4: Simplify right side
    70,899.59x = 3,980,562,601.08
  5. Step 5: Solve for x
    x = 3,980,562,601.08/70,899.59
  6. Step 6: Final answer
    x = 56,143.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.