Home / 78,004,688.36-107,649,853.72-43,197,378.81

Finding the Fourth Proportional to 78,004,688.36, 107,649,853.72 and 43,197,378.81

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Solution

The fourth proportional to 78,004,688.36, 107,649,853.72 and 43,197,378.81 is: 59,614,256.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,004,688.36 : 107,649,853.72 = 43,197,378.81 : x
  2. Step 2: Convert to fraction form
    78,004,688.36/107,649,853.72 = 43,197,378.81/x
  3. Step 3: Cross multiply
    78,004,688.36x = 107,649,853.72 × 43,197,378.81
  4. Step 4: Simplify right side
    78,004,688.36x = 4,650,191,509,445,678
  5. Step 5: Solve for x
    x = 4,650,191,509,445,678/78,004,688.36
  6. Step 6: Final answer
    x = 59,614,256.62

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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.