Home / 86,939,749.20-130,409,623.80-65,256,956.40

Finding the Fourth Proportional to 86,939,749.20, 130,409,623.80 and 65,256,956.40

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Solution

The fourth proportional to 86,939,749.20, 130,409,623.80 and 65,256,956.40 is: 97,885,434.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,939,749.20 : 130,409,623.80 = 65,256,956.40 : x
  2. Step 2: Convert to fraction form
    86,939,749.20/130,409,623.80 = 65,256,956.40/x
  3. Step 3: Cross multiply
    86,939,749.20x = 130,409,623.80 × 65,256,956.40
  4. Step 4: Simplify right side
    86,939,749.20x = 8,510,135,134,457,002
  5. Step 5: Solve for x
    x = 8,510,135,134,457,002/86,939,749.20
  6. Step 6: Final answer
    x = 97,885,434.60

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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.